Patents by Inventor Ku Ni Du

Ku Ni Du has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5799518
    Abstract: A door lock assembly includes a lock body, a latching unit, an electromagnetic driving device, and a linkage mechanism. The latching unit has a locking pin which is mounted slidably in the lock body. The electromagnetic driving device has an inner tube and an outer tube which is connected to the lock body, and first and second insulating ring members connected respectively to two ends of the inner tube and received in the outer tube. An electric coil is mounted around the inner tube. The first ring member has two annular projections and an annular groove formed between the annular projections. The end wires of the electric coil are extendible respectively into the annular groove through the axial hole and the axial notch of the second annular projection in order to connect an end of the electric wire. The linkage mechanism has a first end portion which is received in the inner tube and a second end portion which abuts against a lower end of the locking pin of the latching unit.
    Type: Grant
    Filed: January 22, 1997
    Date of Patent: September 1, 1998
    Assignee: Suetech Industries Co., Ltd.
    Inventor: Ku Ni Du